Available in 3 sizes to cover bags from 10 to 80 liters, The Wingman is constructed of durable ripstop nylon with heat-taped seams and reinforced stress points, and is dual-coated with silicone and PU waterproofing. In effect: It converts your favorite pack into a weatherproof vault, and packs down to a wallet-sized parcel for portability. FEATURES WATERPROOFDual-coated fabric with heat-taped seams create a waterproof barrier, while an adjustable elastic drawstring and durable clips ensure a secure fit. COMPACTThe 40D ripstop nylon fabric is light and compressible, allowing the Wingman to pack and zip into a tidy, portable package when not in use. VERSATILEThe Wingman is available in three sizes and has adjustable elements, allowing it to fit a wide range of day bags, trekking packs, and even bike panniers. SPECIFICATIONS AVAILABLE SIZESSmall (20 - 40 L); Medium (40 - 60 L); Large (60 - 80 L) MAIN BODY FABRIC40D ripstop nylon WATERPROOF COATINGSSilicone and PU HARDWAREElastic drawstring with toggle; Plastic strap attachment clips; pouch zipper